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L. 0. BYOB 82; I L. DIAS.

A. DIAS, administratrix of L L. DIAS, deceased.

HEAT REGULATOR.

No. 319,064. Patented June 2, 1885.

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LYMAN (3. BYCE AND ALZINA DIAS, (ADMINISTRATRIX OF ISAAC L. DIAS,DECEASED) OF PETALUMA, CALIFORNIA.

H EAT-REGULATO R.

LZJFECIPICATIQN forming part of Letters Patent No. 319,064, dated June2, 1885.

Application filed February 9, 1895.

To all whom it may concern:

Be it known that I, LYMAN G. BYOB, of Petalu ma, county of Sonoma, andState of California, and Isaac L. DIAS, late a resident of Petalumaaforesaid, (deceased,) did in thelifetime of said Isaac L. DIAS, and inconjunction with him, invent an Improvement in Heat- Itegulators, ofwhich the following is a specification. V I

This invention relates to that class of heatregulators in which anexpanding and contracting substance is caused through intermediatemechanism to govern or control the source of heat, whereby thetemperature of an apartment may be kept at a certain degree; and thisinvention consists in a novel channel or passage in connection with theheat source and adapted to divert the heat when necessary, avalveadapted to close said passage or channel when the heat is not to bediverted and to open it when otherwise, and in a peculiarvalve-operating mechanism afiected hyan expanding and contractingsubstance, thermostat, or regulator within the apartment, all of whichshall he hereinafter fully explained.

This invention further consists in the application and location of theseparts in connection with an incubator,whereby certain honeficial resultsare effected, as shall he described.

The object of this invention is to provide a simple and effectiveheat-regulating device, which, though applicable to any apartment, isspecially applicable to an incubator.

Referring to the accompanying drawing, the figure is a sectionalperspective of the heatregula-tor.

A is the apartment which may here be considered as the egg-chamber of anincubator. B is a cylinder, the upper end of which (30111 munieatesthrough a passage, b,with the egg chamber. 0 is the lamp, (or othersource of heat,) having a vent or chimney, c, which extends within thecylinder B. The heat from the lamp passing upward through cylinder B andpassage 2) enters the egg-chamber.

Supported in the side of the cylinder B, and projecting within andwithout, is a pipe or passage, 1), the inner end of which is supportedashort distance above, though without touching the top of thelamp-chimney c. A

(No model space is thus left through which the heat escapes into thecylinder, taking its usual course. This is only the case, however, whenthe pipe or passage D is closed, for when it is open throughout theheatis diverted from the cylinder and passes directly through the pipeD. Mounted on the side of the cylinder B is a bracket, E, in the arms ofwhich is journaled a rock shaft, F. From this shalt extends downwardlyan arm, G, thelower end of which carries a valve-plate, H, which isadapted to close or open the end of pipe D. Extending upwardly from theshaft is a balance-weight arm, I, and from the end of the shaft andapproximately at right angles with the other arms extends a weight armor crank, J.

Within the eggchamber is the thermostat T, a particular description ofwhich is not herein necessary, as its construction forms no part of thisapplication. It will be sufiicient to say, therefore, it consists of oneor more casings of thin metal filled with a liquid or fluid adapted toexpand under the influence of heat, whereby the bottom of the casing isbulged out or allowedto return to its natural position. Under the bottomof the thermo stat, though not connected with it, is a smallcontact-plate, k, on top of a rod, K. which passes down through theegg-chamber and is fitted in the top of an adj usting-screw,L,set in along lever, M. This lever is pivoted to a hanger, N, and has on one endan adjustable weight, W. Its other end is connected bv means of a chain,0, with the crank-arm J 6f the roclrshaft.

The operation is as follows: The devices are so regulated that up to acertain degree of heat the weight of the long arm of lever M, the chain0, and the weighted crank-arm J is sufficient to hold the valve Hagainst the pipe D, whereby said pipe is closed and the heat passesthrough the space between the inner end of the pipe and the top of thelamp-chimney into the cylinder B and upward into the eggchamher; butabove that temperature the expansion of the thermostat is sufficient tobear down upon the plate It, whereby, through rod K, lever M, and chain0, the crank-arm J is raised, thus rocking the shaft F and causing thevalve H to move away from and open pipe D. The heat finding a readiermeans of escape passes through said pipe, and is thus diverted from thecylinder B. XVhen the temperature in the egg-chamber has fallen, thecontraction of the thermostat allows the valve toreturn to its position.By the movement of the screw L and weight W the various parts may beaccurately adjusted to cause them to act at any given degree oftemperature.

The particular advantage which the application of this device to anincubator gives, is that the diversion of the heat takes place at ornear the source of heat. Vhen the heat is cut off in the immediateneighborhood of the egg-chamber, the adjacent parts continue to beheated, and the fall in temperature is not as immediate as may bedesired; but in this case what small radiation may take place fromthepipe D is of no consequence, being so far removed from theegg-chamber, and therefore the upper part of the cylinder and theintervening passage cool as rapidly as the eggchambcr. Then again, ithas been customary in cutting off the heat to provide no means for itsescape, and when the passage is re opened it rushes in again; but hereit is di-.

verted into the open air at once and has no quantity stored up toimmediately overheat the chamber again.

Having thus described this invention what is claimed as new, and desiredto be secured by Letters Patent, is-

l. The combination, with an apartment, a heatingdevice, and a pipe orpassage, D, extending from above and near the source of heat to the openair, of a-valve and asuitable ther mostat or regulator in the apartment,and connections between the thermostat and the valve, whereby the heatmay be diverted through said pipe or allowed to pass by it into theapartment, substantially as herein described.

2. A heat-regulating device, consisting of the vessel B, the pipe orpassage D, leading from above and near the source of heat to the openair, and the valve H, adapted to open or close theend of the pipe, incombination with the rock-shaft F, having valve-arm G and crankarm J, asuitable thermostat or regulator, and a connection between saidthermostat and the crank-arm, whereby the shaft F is rocked and thevalve operated, substantially as and for the purpose herein described.

3. A heat-regulating device, consisting of the vessel B, pipe or passageD, in approximate relation with the source. of heat,the rockshaft F,having valve-arm. G, the valve H, adapted to open and close the pipe forthe purpose described, and the crank-arm J, in combination with athermostat or regulator pro vided with the expansion-chamber, thecontact-plate k thereunder, having rod K, the pivoted weighted lever M,to which the rod is joined, and the chain 0, by which the lever andcrank-arm J are connected, all arranged and adapted to operatesubstantially as and for the purpose set forth.

4:. The apartment A, heat-cylinder passage or vessel B b, and the lamp 0in the bottom of thepassage, and having chimney or vent c, incombination withthe pipe or passsage D,supported just over the chimneyor vent and projecting without the cylinder B, the valve H, and asuitable thermostat or regulator within the apartment to open or closethe pipe D,and connections between the valve and thermostat,

whereby the heat is diverted into the open air 1 or allowed to pass upthrough the passage B b into the apartment,substantially as herein described.

5. The apartment A, having a thermostat passage or vessel B b,and thelamp 0 oriother scource of heat in the bottom of the passage and havinga chimney or vent, c, in combina tion with the pipe or passage D,supported just over the chimney or vent and projecting LYMAN o. BYOB.ALZINA DIAS,

Administmzfrix of the estate of Isaac L. Dias,

deceased.

In presence of WVM. B.'HASKELL, M. H. FALKNER.

or regulator, T, within it, the heat-cylinder:

